datatable/src/style.css

:root {
	--border-color: #d1d8dd;
	--primary-color: rgb(82, 146, 247);
	--light-bg: #f5f7fa;
	--light-red: #FD8B8B;
	--light-yellow: #fffce7;
	--orange: rgb(255, 160, 10);
	--text-color: #000000;
	--text-light: #dfe2e5;

	--spacer-1: 0.25rem;
	--spacer-2: 0.5rem;
	--spacer-3: 1rem;

	--border-radius: 3px;

	--cell-bg: #fff;
}

.datatable {
    *, *::after, *::before {
		box-sizing: border-box;
	}
}

.datatable {
	position: relative;
	overflow: auto;
}

.dt-header {
	border-collapse: collapse;
	border-bottom: 1px solid var(--border-color);

	position: absolute;
	top: 0;
	left: 0;
	background-color: var(--cell-bg);
}

.dt-body {
	border-collapse: collapse;
}

.dt-scrollable {
	max-height: 40vw;
	overflow: auto;
	border-bottom: 1px solid var(--border-color);

	&--highlight-all {
		background-color: var(--light-yellow);
	}

	&__no-data {
		text-align: center;
		padding: var(--spacer-3);
		border-left: 1px solid var(--border-color);
		border-right: 1px solid var(--border-color);
	}
}

.dt-row {
	&--highlight {
		background-color: var(--light-yellow);
	}

	&--unhighlight {
		background-color: var(--cell-bg);
	}

	&--hide {
		display: none;
	}
}

.dt-cell {
	border: 1px solid var(--border-color);
	position: relative;
	outline: none;
	padding: 0;

	&__content {
		padding: var(--spacer-2);
		border: 2px solid transparent;
		height: 100%;
		user-select: none;
		text-overflow: ellipsis;
		white-space: nowrap;
		overflow: hidden;
	}

	&__edit {
		display: none;
		padding: var(--spacer-2);
		background-color: var(--cell-bg);
		border: 2px solid var(--orange);
		z-index: 1;
		height: 100%;
	}

	&__resize-handle {
		opacity: 0;
		position: absolute;
		right: -3px;
		top: 0;
		width: 5px;
		height: 100%;
		cursor: col-resize;
		z-index: 1;
	}

	&--editing &__content {
		display: none;
	}

	&--editing &__edit {
		display: block;
	}

	&--focus &__content {
		border-color: var(--primary-color);
	}

	&--highlight {
		background-color: var(--light-bg);
	}

	&--dragging {
		background-color: var(--light-bg);
	}

	&--header &__content {
		padding-right: var(--spacer-3);
		font-weight: bold;
	}

	&--header:hover .dt-dropdown__toggle {
		opacity: 1;
	}

	&--tree-close {
		.dt-tree-node__toggle:before {
			content: '►';
		}
	}
}

.dt-dropdown {
	position: absolute;
	right: 10px;
	display: inline-flex;
	vertical-align: top;
	text-align: left;
	font-weight: normal;
	cursor: pointer;

	&__toggle {
		opacity: 0;
	}

	&__list {
		display: none;

		position: absolute;
		min-width: 8rem;
		top: 100%;
		right: 0;
		z-index: 1;
		background-color: var(--cell-bg);
		border-radius: var(--border-radius);
		padding: var(--spacer-2) 0;
		box-shadow: 0 2px 3px rgba(10, 10, 10, 0.1), 0 0 0 1px rgba(10, 10, 10, 0.1);
	}

	&__list-item {
		padding: var(--spacer-2) var(--spacer-3);

		&:hover {
			background-color: var(--light-bg);
		}
	}

	&--active &__list {
		display: block;
	}
}

.dt-tree-node {
	display: inline-block;
	position: relative;

	&__toggle {
		display: inline-block;
		position: absolute;
		font-size: 10px;
		padding: 0 4px;
		cursor: pointer;
	}

	&__toggle:before {
		content: '▼';
	}
}

.dt-toast {
	position: absolute;
	bottom: var(--spacer-3);
	left: 50%;
	transform: translateX(-50%);

	&__message {
		display: inline-block;
		background-color: rgba(0, 0, 0, 0.8);
		color: var(--text-light);
		border-radius: var(--border-radius);
		padding: var(--spacer-2) var(--spacer-3);
	}
}

.dt-input {
	outline: none;
	width: 100%;
	border: none;
	overflow: visible;
	font-family: inherit;
	font-size: inherit;
	line-height: inherit;
	margin: 0;
	padding: 0;
}

.dt-freeze {
	display: flex;
	justify-content: center;
	align-content: center;
	position: absolute;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	background-color: var(--light-bg);
	opacity: 0.5;
	font-size: 2em;

	&__message {
		position: absolute;
		top: 50%;
		transform: translateY(-50%);
	}
}

.dt-paste-target {
	position: fixed;
	left: -999em;
}

body.dt-resize {
	cursor: col-resize;
}